Watch List notes:

Bank of England, Graham Edward Alfred Kentfield (1991-1998), £20, ND (1991), serial number S30 537128, purple and multicoloured, Elizabeth II at right, Britannia at left, reverse purple, Michael Faraday and lecture theatre,, (EPM B371, Pick 384b), in PMG holder 64 EPQ Choice Uncirculated and a very rare error: a large extra paper flap top right with part of another note showing the same serial number but prefix S29.

Estimate: £300 - £400